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Scientific, Technological and Production Journal
ISSN 2079–3332 (print)
ISSN 3034-6835 (online)
founded in 2001

Determination of «mining unit» rational parameters for the opencast mining conditions of phosphorite ore deposits

Original articles: 2026 No 3

Determination of «mining unit» rational parameters for the opencast mining conditions of phosphorite ore deposits

DOI: 10.56195/20793332-2026-26-3-33-38

Read in pdf A. Yu. Eroshev1, S. I. Fomin2
  1. VNII Galurgii JSC, Saint Petersburg, Russian Federation
  2. Empress Catherine II Saint Petersburg Mining University, Saint Petersburg, Russian Federation
p. 33-38, No.3/2026
Abstract:
The choice of opencast contours has a direct impact on productivity, the duration of field operation, and the volume of both industrially significant mineral reserves and overburden removed from the opencast mine. The parameters of the opencast’s working area serve as a determining factor in choosing the opening method, the location of the technological system, and the location of mining infrastructure facilities, including surface buildings, structures, and transport arteries. When deciding what to understand by a mining unit, one should proceed from the purposes for which this concept is introduced, and the objective mining and geological conditions of the field development. In an effort to achieve a real technical and economic effect resulting from loss and clogging control, the difference between mining units is insignificant, since control over the extraction of minerals must be carried out systematically, especially when mining ore - waste rock contacts. Monitoring the development of reserves only by comparing actual production figures with their planned or regulatory values, as is currently being done, cannot be effective regardless of whether it is carried out over the operational horizon or over the opencast as a whole. When determining a mining unit, it is necessary to take into account the expediency and cost-effectiveness of accounting for the extracted ore in terms of quantity and quality of mineral raw materials. The purpose of the study was to consider the techniques of definition the optimal mining unit during openсast mining for technical conditions of steeply dipping ore deposits. Mining-technical analysis to achieve a real technical and economic effect resulting from loss and clogging control, the difference between excavation units is insignificant, since control over the extraction of minerals must be carried out systematically, especially when mining ore - waste rock contacts. To determine the rational parameters of the opencast’s working area serve as a determining factor in choosing the opening method, the location of the technological system, and the location of mining infrastructure facilities, including surface buildings, structures, and transport arteries. The research results can be useful when designing and planning mining operations for the geological conditions of opencast phosphate deposits.
Keywords:
opencast mining, ore quality, optimal volume, ore deposits, mining unit, stripping ratio, economic loss, mineral dilution
For citation:
Eroshev A.Yu., Fomin S.I. Determination of «mining unit» rational parameters for the opencast mining conditions of phosphorite ore deposits. Mine Surveying and Subsurface Use. 2026; 26 (3): 33-38. (In Russ.). https://doi.org/10.56195/207933322026-26-3-33-38.
Information about the authors:
  1. Andrey Yu. Eroshev – Postgraduate student of VNII Galurgii JSC. Saint Petersburg, Russian Federation. Deputy General Director for Mining and Processing Complex, Kazphosphate LLP. Almaty, Republic of Kazakhstan
  2. Sergey I. Fomin – Dr. Sci. (Eng.), Professor at the Department of mining, Empress Catherine II Saint Petersburg Mining University. Saint Petersburg. Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.; https://orcid.org/0000-0002-0939-1189
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